NO322902B1 - Process for Preparation of Iron Oxide Pigments of Thin Acid from Preparation of TiO2 - Google Patents

Process for Preparation of Iron Oxide Pigments of Thin Acid from Preparation of TiO2 Download PDF

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Publication number
NO322902B1
NO322902B1 NO20004678A NO20004678A NO322902B1 NO 322902 B1 NO322902 B1 NO 322902B1 NO 20004678 A NO20004678 A NO 20004678A NO 20004678 A NO20004678 A NO 20004678A NO 322902 B1 NO322902 B1 NO 322902B1
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Prior art keywords
iron
iron oxide
compounds
pigment
thin acid
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NO20004678A
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Norwegian (no)
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NO20004678D0 (en
NO20004678L (en
Inventor
Guenter Lailach
Gerhard Auer
Ulrich Meisen
Werner Schuy
Udo Julius
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Lanxess Deutschland Gmbh
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Application filed by Lanxess Deutschland Gmbh filed Critical Lanxess Deutschland Gmbh
Publication of NO20004678D0 publication Critical patent/NO20004678D0/en
Publication of NO20004678L publication Critical patent/NO20004678L/en
Publication of NO322902B1 publication Critical patent/NO322902B1/en

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/08—Ferroso-ferric oxide (Fe3O4)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide (Fe2O3)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/62—L* (lightness axis)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/63—Optical properties, e.g. expressed in CIELAB-values a* (red-green axis)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/64—Optical properties, e.g. expressed in CIELAB-values b* (yellow-blue axis)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Claims (18)

1. Fremgangsmåte for fremstilling av jernoksid-pigmenter fra den ved fremstillingen av titandioksid etter sulfatfremgangsmåten dannede tynnsyre, karakterisert ved at det i første trinn foregår en delvis nøytralisering av den i tynnsyren inneholdte svovelsyre med forbindelser fra gruppen metallisk j em og/eller jemforbindelser, eventuelt nøytraliseres ytterligere med en ytterligere alkalisk forbindelse, fra det således oppnådde reaksjonsproduktet skilles bunnfallet inneholdende Ti-, Al-, Cr- og V-forbindelser fra og fra den således oppnådde jernsulfatholdige oppløsning utfelles et jernoksid-pigment under tilsetning av alkaliske forbindelser så vel som et oksidasjonsmiddel.1. Process for the production of iron oxide pigments from the thin acid formed during the production of titanium dioxide according to the sulphate process, characterized in that in the first step, the sulfuric acid contained in the thin acid is partially neutralized with compounds from the group of metallic jem and/or jem compounds, possibly further neutralized with a further alkaline compound, from the thus obtained reaction product the precipitate containing Ti, Al, Cr and V compounds is separated from and from the iron sulphate-containing solution thus obtained an iron oxide pigment is precipitated with the addition of alkaline compounds as well as an oxidising agent. 2. Fremgangsmåte ifølge krav 1, karakterisert ved at nøytraliseringen av tynnsyren med metallisk jem eller jemforbindelser gjennomføres til en pH-verdi på 0,5 til 4,7, fortrinnsvis fra 2,5 til 4,7.2. Method according to claim 1, characterized in that the neutralization of the thin acid with metallic jem or jem compounds is carried out to a pH value of 0.5 to 4.7, preferably from 2.5 to 4.7. 3. Fremgangsmåte ifølge krav 1, karakterisert ved at nøytraliseringen av tynnsyren i det første trinnet foretas med to eller flere etter hverandre følgende jernmaterialer med forskjellig reaktivitet.3. Method according to claim 1, characterized in that the neutralization of the thin acid in the first step is carried out with two or more following iron materials with different reactivity. 4. Fremgangsmåte ifølge krav 1, karakterisert ved at nøytraliseringen av tynnsyre i det første trinnet først foretas med et reaksjonstregt jernmateriale til en pH-verdi på 0,5 til 3,5 og etterfølgende med et mer reaksjonsivrig jernmateriale til en pH-verdi fra 2,4 til 4,7.4. Method according to claim 1, characterized in that the neutralization of thin acid in the first step is first carried out with a slow-reacting iron material to a pH value of 0.5 to 3.5 and subsequently with a more reactive iron material to a pH value of 2.4 to 4.7. 5. Fremgangsmåte ifølge krav 1, karakterisert ved at det som reaksjonstregt jernmateriale anvendes glødeskall og at det som reaksjonsivrig jernmaterial anvendes støpejernsponer.5. Method according to claim 1, characterized in that red-hot slag is used as the reaction-retarded iron material and that cast iron shavings are used as the reactive iron material. 6. Fremgangsmåte ifølge krav 1, karakterisert ved at det til delvis nøytralisering av tynnsyren i det første trinnet anvendte metalliske jern og de basiske jemforbindelsene har et manganinnhold på mindre enn 0,8 % Mn, på basis av Fe, fortrinnsvis et manganinnhold på mindre enn 0,4 % Mn, på basis av Fe.6. Method according to claim 1, characterized in that the metallic iron and the basic iron compounds used for partial neutralization of the thin acid in the first step have a manganese content of less than 0.8% Mn, based on Fe, preferably a manganese content of less than 0, 4% Mn, on the basis of Fe. 7. Fremgangsmåte ifølge krav 1, karakterisert ved at et etter tilsetning av det metalliske jern eller jemforbindelsene foretas en ytterligere nøytralisering av oppløsningen med alkaliske forbindelser til en pH-verdi fra 3,0 til 5,0, fortrinnsvis til en pH-verdi fra 3,8 til 4,8.7. Method according to claim 1, characterized in that, after adding the metallic iron or the iron compounds, a further neutralization of the solution is carried out with alkaline compounds to a pH value from 3.0 to 5.0, preferably to a pH value from 3.8 to 4.8. 8. Fremgangsmåte ifølge krav 1, karakterisert ved at det som ytterligere nøytraliseirngsmiddel i det første trinnet anvendes alkaliske forbindelser som danner tungtoppløselige sulfater.8. Process according to claim 1, characterized in that alkaline compounds which form poorly soluble sulfates are used as additional neutralizing agents in the first step. 9. Fremgangsmåte ifølge krav 1, karakterisert ved at det som ytterligere nøytraliseirngsmiddel i det første trinnet anvendes kraftverksaske, avfallsforbrenningsaske eller en annen alkalisk reagerende aske.9. Method according to claim 1, characterized in that power plant ash, waste incineration ash or another alkaline-reacting ash is used as an additional neutralizing agent in the first step. 10. Fremgangsmåte ifølge krav 1, karakterisert ved at det gjennom utskillelse av Ti-, Al-, Cr- og V-holdige faststoffene og eventuelt gjennom inndamping eller fortynning fremstilles en jernsulfatholdig oppløsning som inneholder mellom 150 og 250 g FeS04 pr. liter.10. Process according to claim 1, characterized in that through separation of the Ti-, Al-, Cr- and V-containing solids and possibly through evaporation or dilution, a ferrous sulfate-containing solution containing between 150 and 250 g of FeS04 per litres. 11. Fremgangsmåte ifølge krav 1, karakterisert ved at den jernsulfatholdige oppløsningen omsettes til jernoksidsvart-pigment under tilsetning av alkaliske forbindelser som ikke danner noen tungt oppløselige sulfater og et oksidasj onsmiddel.11. Method according to claim 1, characterized in that the iron sulphate-containing solution is converted to iron oxide black pigment with the addition of alkaline compounds which do not form any poorly soluble sulphates and an oxidising agent. 12. Fremgangsmåte ifølge krav 1, karakterisert ved at den jernsulfatholdige oppløsningen omsettes til jernoksids vart-pigment under tilsetning av alkaliske forbindelser som ikke danner noen tungtoppløselige sulfater, og et oksidasjonsmiddel.12. Process according to claim 1, characterized in that the iron sulfate-containing solution is converted to iron oxide's wart pigment with the addition of alkaline compounds which do not form any poorly soluble sulfates, and an oxidizing agent. 13. Fremgangsmåte ifølge krav 1, karakterisert ved at det til utfellingen av jernoksidpigmentet anvendes gassformig eller i vann oppløst NH3, NaOH, KOH, MgO eller Mg(OH)2.13. Process according to claim 1, characterized in that gaseous or water-dissolved NH3, NaOH, KOH, MgO or Mg(OH)2 is used for the precipitation of the iron oxide pigment. 14. Fremgangsmåte ifølge krav 1, karakterisert ved at det som oksidasjonsmiddel anvendes oksygen eller en oksygenholdig gassblanding, fortrinnsvis luft.14. Method according to claim 1, characterized in that oxygen or an oxygen-containing gas mixture, preferably air, is used as oxidizing agent. 15. Fremgangsmåte ifølge krav 1, karakterisert ved at det fremstilles et jernoksid med et manganinnhold på mindre enn eller lik med 0,11 %, fortrinnsvis mindre eller lik med 0,06 % i forhold til Fe.15. Method according to claim 1, characterized in that an iron oxide is produced with a manganese content of less than or equal to 0.11%, preferably less than or equal to 0.06% in relation to Fe. 16. Fremgangsmåte ifølge krav 1, karakterisert ved at det utfelte jernoksidsvart-pigmentet etter utskillelse, rensing og tørking utglødes til et j emoksidrød-pigment.16. Method according to claim 1, characterized in that the precipitated iron oxide black pigment is annealed to an iron oxide red pigment after separation, cleaning and drying. 17. Fremgangsmåte ifølge krav 1, karakterisert ved at utfelte jernoksidgul-pigment etter atskillelse, rensing og tørking utglødes til et j emoksidrød-pigment.17. Method according to claim 1, characterized in that precipitated iron oxide yellow pigment is annealed to a j emoxide red pigment after separation, cleaning and drying. 18. Fremgangsmåte ifølge krav 1, karakterisert ved at ammoniakk anvendes som nøytraliseringsmiddel og at ammoniakk frigis fra den etter atskillelse av det utfelte jernoksid-pigment oppnådde (NH^SCvholdige oppløsning ved tilsetning av CaO og/eller Ca(OH)2.18. Process according to claim 1, characterized in that ammonia is used as a neutralizing agent and that ammonia is released from the (NH^SCv-containing solution obtained after separation of the precipitated iron oxide pigment by adding CaO and/or Ca(OH)2.
NO20004678A 1998-03-20 2000-09-19 Process for Preparation of Iron Oxide Pigments of Thin Acid from Preparation of TiO2 NO322902B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19812260A DE19812260A1 (en) 1998-03-20 1998-03-20 Production of iron oxide pigments from dilute acid formed in manufacture of titanium dioxide
PCT/EP1999/001736 WO1999048815A1 (en) 1998-03-20 1999-03-17 METHOD FOR PRODUCING IRON OXIDE PIGMENTS FROM WASTE ACID RESULTING FROM TiO2 PRODUCTION

Publications (3)

Publication Number Publication Date
NO20004678D0 NO20004678D0 (en) 2000-09-19
NO20004678L NO20004678L (en) 2000-09-19
NO322902B1 true NO322902B1 (en) 2006-12-18

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NO20004678A NO322902B1 (en) 1998-03-20 2000-09-19 Process for Preparation of Iron Oxide Pigments of Thin Acid from Preparation of TiO2

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US (1) US6530987B1 (en)
EP (1) EP1064226B1 (en)
JP (1) JP2002507633A (en)
AU (1) AU3413699A (en)
BR (1) BR9908926A (en)
CA (1) CA2324215A1 (en)
DE (2) DE19812260A1 (en)
ES (1) ES2178885T3 (en)
MY (1) MY119584A (en)
NO (1) NO322902B1 (en)
WO (1) WO1999048815A1 (en)
ZA (1) ZA200004674B (en)

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CN103663568A (en) * 2013-11-20 2014-03-26 青岛文创科技有限公司 Transparent iron oxide yellow production process
CN103788711A (en) * 2014-02-12 2014-05-14 铜陵瑞莱科技有限公司 Corrosion-resistant antibacterial iron oxide red pigment
CN103788707A (en) * 2014-02-12 2014-05-14 铜陵瑞莱科技有限公司 Red soil-containing iron oxide red pigment
CN104108814B (en) * 2014-07-22 2016-03-30 四川龙蟒钛业股份有限公司 A kind of method processing Rutile type Titanium Dioxide waste water
CN105217694A (en) * 2015-08-26 2016-01-06 昆明理工大学 A kind of method preparing red iron oxide and ammonium chloride
CN105349778B (en) * 2015-10-21 2017-04-19 黄钰雪 Clean production method for recycling yellow phosphorus, iron oxide red or precious metal from ferrophosphorus
CN105502512B (en) * 2016-02-04 2017-06-20 天津大学 A kind of method that iron oxide yellow is prepared by iron and steel pickling waste liquid
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CA2324215A1 (en) 1999-09-30
NO20004678D0 (en) 2000-09-19
ZA200004674B (en) 2001-07-25
US6530987B1 (en) 2003-03-11
JP2002507633A (en) 2002-03-12
BR9908926A (en) 2000-11-21
EP1064226B1 (en) 2002-06-26
MY119584A (en) 2005-06-30
WO1999048815A1 (en) 1999-09-30
DE19812260A1 (en) 1999-09-23
DE59901852D1 (en) 2002-08-01
ES2178885T3 (en) 2003-01-01
AU3413699A (en) 1999-10-18
EP1064226A1 (en) 2001-01-03
NO20004678L (en) 2000-09-19

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